2.5.1_Laws of Logic Video Lesson

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__________ Reasoning relies on logic to draw conclusions

• Inductive

• Deductive

Tags

CCSS.HSS.IC.B.3

Which law is illustrated below?

p→q

∼q

∴∼p

• Law of Detachment

• Law of Syllogism

• Law of Contrapositive

Which law of logic is illustrated below?

p→q

q→r

∴p→r

• Law of Detachment

• Law of Syllogism

• Law of Contrapositive

Which law of logic is illustrated below?

p→q

p

∴q

• Law of Detachment

• Law of Syllogism

• Law of Contrapositive

If I comb my hair, then I won't have tangles.

I have tangles.

Therefore, I didn't comb my hair.

Which law is being demonstrated?

• Law of Detachment

• Law of Syllogism

• Law of Contrapositive

• No law

Tags

CCSS.RI.8.1

CCSS.RI.8.8

CCSS.RL.11-12.1

CCSS.RL.8.1

CCSS.RL.9-10.1

If my team wins the game, then they will be the champions.

My team is the champion.

Therefore, my team won the game.

Which law is being demonstrated?

• Law of Detachment

• Law of Syllogism

• Law of Contrapositive

• No law

If you need help, then you stay after class.

If you stay after class, then you ask questions.

What is the logical conclusion?

• Therefore, if you stay after class, then you need help.

• Therefore, if you ask questions, then you need help.

• Therefore, if you need help, then you ask questions.

• There is no logical conclusion.

Tags

CCSS.RI.8.1

CCSS.RI.8.8

CCSS.RL.11-12.1

CCSS.RL.8.1

CCSS.RL.9-10.1

If you go to the mall, then you will spend money.

You didn't spend any money today.

What is the logical conclusion?

• Therefore, you didn't go to the mall.

• Therefore, you don't have any money.

• Therefore, you went to the mall.

• There is no logical conclusion.

Tags

CCSS.RI.8.1

CCSS.RI.8.8

CCSS.RL.11-12.1

CCSS.RL.8.1

CCSS.RL.9-10.1